<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		 <h1>请选择你的专业</h1><br>
		 <select name="" id="">
			 <option value="">计本</option>
			 <option value="">信本</option>
			 <option value="" selected="selected">网本</option>
			 <option value="">软本</option>
			 <option value="">大数据</option>
			
		 </select>
		 
		 <h1>请选择你喜欢的小吃</h1>
		<select name="" id="" multiple="multiple" size="7">
			<optgroup label="四川">
				<option value ="">酸辣粉</option>
				<option value ="">夫妻肺片</option>
			</optgroup>
			<optgroup label="北京">
				<option value ="">炸酱面</option>
				<option value ="">烤鸭</option>
			</optgroup>
		</select>
	</body>
</html>
